Gradiometer configuration invariant to laser phase noise and sensor rotations

a gradiometer and phase noise technology, applied in the field ofgravimeters and gradiometers, can solve the problems of high power consumption, fieldable instruments, and high cos
US20160178792A1Active Publication Date: 2016-06-23AOSENSE
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
AOSENSE
Publication Date
2016-06-23

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Abstract

A system for gravity measurement includes one or more atom sources, two or more laser beams, and a polarizing beamsplitter and a retro-reflection prism assembly. The one or more atom sources is to provide three ensembles of atoms. The two or more laser beams is to cool or interrogate the three ensembles of atoms. The polarizing beamsplitter and the retro-reflection prism assembly are in a racetrack configuration. The racetrack configuration routes the two or more laser beams in opposing directions around a loop topology, intersecting the three ensembles of atoms with appropriate polarizations chosen for cooling or interferometer interrogation. The three ensembles of atoms are positioned coaxially when interrogated.
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Description

CROSS REFERENCE TO OTHER APPLICATIONS

[0001] This application claims priority to U.S. Provisional Patent Application No. 62 / 095,671 entitled GRADIOMETER CONFIGURATION INVARIANT TO LASER PHASE NOISE AND SENSOR ROTATIONS filed Dec. 22, 2014 which is incorporated herein by reference for all purposes.

[0002] This invention was made with Government support under DE-AC52-07NA27344 awarded by the United States Department of Energy. The Government has certain rights in the invention.BACKGROUND OF THE INVENTION

[0003] Field-capable gravimeters and gradiometers are currently used to measure gravity and gravity gradients for numerous applications including surveys of underground mineral and natural resources, predictions of earthquakes, and global climate research such as monitoring Earth's icecaps and water tables. Primary use comes from oil and mining companies, the defense industry, large-scale government-funded projects such as the National Geodetic Survey (NGS), academic researchers focused on ...

Claims

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